YGTSS assessment in children with TD with or without allergic disease
| YGTSS score | TD (n=135) | TD plus allergy (n=85) | t (X2)* | P value |
| Motor tics | 24.5±3.7 | 20.2±3.2 | 9.13 | 0.0000 |
| Vocal tics | 10.4±4.1 | 8.5±3.8 | 3.502 | 0.0006 |
| Total score | 34.9±6.5 | 28.7±6.1 | 7.156 | 0.0000 |
*Pearson’s χ2 test.
TD, tic disorder; YGTSS, Yale Global Tic Severity Scale.